Causes and Five-Year Proportion of New Irreversible Visual Impairment in Jinshan District, Shanghai, from 2009–2018

Table 1

Age and gender distribution of visual impairment in Jinshan district, Shanghai, using the visual impairment definitions of the WHO.

	2009–2013				2014–2018
	Blindness		Low vision		Blindness		Low vision
Age group (yrs)	n	% (95% CI)	n	% (95% CI)	n	% (95% CI)	n	% (95% CI)	value^a	value^b
≤29	4	4.8 (0.1, 9.4)	12	4.8 (2.1, 7.5)	5	1.7 (0.2, 3.2)	14	4.3 (2.1, 6.5)	0.113	0.841
30–39	5	6.0 (0.8, 11.1)	33	13.2 (9.0, 17.4)	9	3.0 (1.1, 5.0)	23	7.1 (4.3, 9.8)	0.204	0.016
40–49	17	17.7 (9.9, 25.5)	100	40.0 (33.9, 46.1)	25	8.4 (5.3, 11.6)	56	17.2 (13.1, 21.3)	0.005	<0.001
50–59	30	35.7 (25.3, 46.2)	71	28.4 (22.8, 34.0)	73	24.7 (19.7, 29.6)	103	31.6 (26.5, 36.7)	0.052	0.412
60–69	16	19.0 (10.5, 27.6)	30	12.0 (7.9, 16.1)	73	24.7 (19.7, 29.6)	79	24.2 (19.6, 28.9)	0.310	<0.001
≥70	12	14.3 (6.6, 21.9)	4	1.6 (0, 3.2)	111	37.5 (32.0, 43.0)	51	15.6 (11.7, 19.6)	<0.001	<0.001
Male	49	58.3 (47.6, 69.1)	140	56.0 (49.8, 62.2)	158	53.4 (47.7, 59.1)	175	53.7 (48.2, 59.1)	0.458	0.613
Female	35	41.7 (30.9, 52.4)	110	44.0 (37.8, 50.2)	138	46.6 (40.9, 52.3)	151	46.3 (40.9, 51.8)	0.458	0.613
Total	84		250		296		326

^aComparison of the prevalence of blindness between 2009–2013 and 2014–2018. ^bComparison of the prevalence of low vision between 2009–2013 and 2014–2018.